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which point is a reflection of point R(-2, 9) first across the y-axis and then across the x-axis?
[tex]\hbox{Given a point }A=(x,y) \hbox{, its the reflection }\\
\hbox{across the x-axis is: }A'=(x_A,-y_A)\\
\hbox{across the y-axis is: }A'=(-x_A,y_A)\\\\
\hbox{The reflection of }R \hbox{ across the x-axis is: }\\
R'=(-2,-9)\\
\hbox{The reflection of } R \hbox{ across the y-axis is: }\\
R'=(-(-2),9)=(2,9)[/tex]
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